<template>
  <div class="login">
    <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form">
      <div class="title">爱贝丽商城后台管理系统</div>
      <el-form-item prop="username">
        <el-input v-model="loginForm.username" type="text" auto-complete="off" placeholder="账号">
          <svg-icon slot="prefix" icon-class="user" class="el-input__icon input-icon" />
        </el-input>
      </el-form-item>
      <el-form-item prop="password">
        <el-input v-model="loginForm.password" type="password" auto-complete="off" placeholder="密码" @keyup.enter.native="handleLogin">
          <svg-icon slot="prefix" icon-class="password" class="el-input__icon input-icon" />
        </el-input>
      </el-form-item>
      <el-form-item prop="code">
        <el-input v-model="loginForm.code" auto-complete="off" placeholder="验证码" style="width: 63%" @keyup.enter.native="handleLogin">
          <svg-icon slot="prefix" icon-class="validCode" class="el-input__icon input-icon" />
        </el-input>
        <div class="login-code">
          <img :src="codeUrl" @click="getCode" class="login-code-img" />
        </div>
      </el-form-item>
      <div class="handle-password">
        <el-checkbox v-model="loginForm.rememberMe">记住密码</el-checkbox>
        <el-link type="primary" :underline="false">忘记密码？</el-link>
      </div>
      <el-form-item class="login-button">
        <el-button :loading="loading" size="medium" :round="true" type="primary"
        @click.native.prevent="handleLogin">
          <span v-if="!loading">登 录</span>
          <span v-else>登 录 中...</span>
        </el-button>
      </el-form-item>
    </el-form>
  </div>
</template>

<script>
  import {
    getCodeImg
  } from "@/api/login";
  import Cookies from "js-cookie";
  import {
    encrypt,
    decrypt
  } from '@/utils/jsencrypt'

  export default {
    name: "Login",
    data() {
      return {
        codeUrl: "",
        cookiePassword: "",
        loginForm: {
          username: "admin",
          password: "admin123",
          rememberMe: false,
          code: "",
          uuid: ""
        },
        loginRules: {
          username: [{
            required: true,
            trigger: "blur",
            message: "用户名不能为空"
          }],
          password: [{
            required: true,
            trigger: "blur",
            message: "密码不能为空"
          }],
          code: [{
            required: true,
            trigger: "change",
            message: "验证码不能为空"
          }]
        },
        loading: false,
        redirect: undefined
      };
    },
    watch: {
      $route: {
        handler: function(route) {
          this.redirect = route.query && route.query.redirect;
        },
        immediate: true
      }
    },
    created() {
      this.getCode();
      this.getCookie();
    },
    methods: {
      getCode() {
        getCodeImg().then(res => {
          this.codeUrl = "data:image/gif;base64," + res.img;
          this.loginForm.uuid = res.uuid;
        });
      },
      getCookie() {
        const username = Cookies.get("username");
        const password = Cookies.get("password");
        const rememberMe = Cookies.get('rememberMe')
        this.loginForm = {
          username: username === undefined ? this.loginForm.username : username,
          password: password === undefined ? this.loginForm.password : decrypt(password),
          rememberMe: rememberMe === undefined ? false : Boolean(rememberMe)
        };
      },
      handleLogin() {
        this.$refs.loginForm.validate(valid => {
          if (valid) {
            this.loading = true;
            if (this.loginForm.rememberMe) {
              Cookies.set("username", this.loginForm.username, {
                expires: 30
              });
              Cookies.set("password", encrypt(this.loginForm.password), {
                expires: 30
              });
              Cookies.set('rememberMe', this.loginForm.rememberMe, {
                expires: 30
              });
            } else {
              Cookies.remove("username");
              Cookies.remove("password");
              Cookies.remove('rememberMe');
            }
            this.$store
              .dispatch("Login", this.loginForm)
              .then(() => {
                this.$router.push({
                  path: this.redirect || "/"
                });
              })
              .catch(() => {
                this.loading = false;
                this.getCode();
              });
          }
        });
      }
    }
  };
</script>

<style scoped>
  .login {
    height: 100%;
    background: url("../assets/image/login-background.png") no-repeat center center/cover;
    position: relative;
  }

  .login-form {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(100px, -50%);
  }

  .title {
    font-family: "PangMenZhengDao";
    font-size: 2.75rem;
    color: #3D9DFC;
    padding-bottom: 6.25rem;
  }

  .el-input {
    height: 59px;
  }

  .el-input input {
    height: 59px;
  }

  .input-icon {
    height: 60px;
    width: 14px;
    margin-left: 2px;
  }

  .login>>>.el-input__inner {
    height: 59px;
    border: none;
    border-bottom: 1px solid #D6D3D6;
  }

  .login-code {
    width: 33%;
    height: 38px;
    float: right;
  }

  .login-code img {
    cursor: pointer;
    vertical-align: middle;
  }

  .handle-password {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 0;
    margin-bottom: 25px;
  }

  .login-button {
    width: 80%;
    margin: 0 auto;
  }

  .el-button {
    width: 100%;
    height: 2.75rem;
    border-radius: 1.375rem;
  }

  .el-login-footer {
    height: 40px;
    line-height: 40px;
    position: fixed;
    bottom: 0;
    width: 100%;
    text-align: center;
    color: #fff;
    font-family: Arial;
    font-size: 12px;
    letter-spacing: 1px;
  }

  .login-code-img {
    height: 38px;
  }
</style>
